Device for preventing electrolysis in pipes.



No. 634,848. Patented (m. I0, I899. c. s. counsou.

DEVICE FOR PREVENTING ELEGTROLYSIS IN PIPES.

(Application flledApr. 1, 1899.

(No Model.)

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I CLINTON S. OOURSON, OF SPRINGFIELD, OHIO.

DEVlCE FOR PREVENTING ELECTROLYSIS IN PiPES.-

SPECIFICATION forming part of Letters Patent No. 634,848, dated October 10, 1899.

Application filed April 1, 1899. Serial No. 711,341. (No model.)

ll'o ctZZ whom, it may concern/.-

Be it known that I, CLINTON S. OOURSON, a citizenof the United States,residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Devices for Preventing Electrolysis in Pipes, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in means for preventing electrolysis in pipe-lines.

The object of this invention is to provide means forpreventing electrolysis of pipes and pipe-joint packing in water, gas, and oil pipelines; and to that end my invention has reference to a noirclectricity-condnoting packing which is fitted between the meeting ends of pipes, so as to break contact between them, and thereby prevent the flow of electricity along the line of pipe where such packing is used.

My invention also relates to details of construction hereinafter appearing and particularly pointed out in the claims. I

In the accompanying, drawings, on which like reference-letters indicate corresponding parts, Figure 1 represents a portion ofia pipeline with my improvement applied thereto; Fig. 2, a sectional viewon the lineocxof Fig. 3; Fig. 3, a longitudinal sectional View; Fig. 4, a detail plan view of my packing, and Fig.

'5 an end view of the same.

tion I have effectually overcome this difficult'y by a very simple device,- as will hereinafter appear.

The letter A represents a portion of a length of pipesay a water-pipe, such as used for conducting water through streets of cities, One end of this pipe is enlarged to form adjacent pipe, such as shown at C. At the 7 end of this meeting pipe it will be seen that there is ahead or projection D. About such end isadapted to fit a packing a, formed of rubber or other non-electricity-conducting material. At its inner end this packing has an inward projection or flange E, which fits down over the end'of the pipe 0 and against the inner wall F of the bell B, thus effectually insulating one pipe from the other, so that electricity cannot pass from one to the other. It will be observed that the packing has an annular groove G adjacent to the flange F in the inside. This annular groove is for the reception of the bead D. In order that the packing, together with the pipe C, may be readily slipped within the hell, I provide one or more annular extensions H on the outside of said packing, as clearly seen in Figs. 3 and at, so that said packing will not rub throughout its entire length against the hell; but the annular extensions snugly fit within the bell and prevent any leakage between said bell and packing. The flange E between the meeting ends of the pipes prevents leakage at such ends.

Thus it will be seen that with my invention, aside frompreventing the flow of electricity through the pipes, the packing a is simple and effective and does away with the expense of calking and the filling of the joints with molten lead, together with tow-packing. Such method of packing is very expensive and is more or less defective unless properly calked, as this calking is accomplished with great difficulty, especially when working in a narrow trench, when it frequently happens that joints will leak when put under high pressure.

In practice, if so desired, this method of insulating joints may be applied at intervals in a pipe-line; but I prefer to use it at every joint, for the reason that short circuits are more readily avoided.

Referring again to the packing it will be seen that it projects a short distance beyond the end of the bell. This is for the purpose of more readily preventing connection for conducting the electricity between the end of such bell and the pipe 0. Of course it Will be understood that this packing arrangement may be used in connection with various kinds of pipe other than those employing a bell.

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In a device for preventing electrolysis in pipe -lines, a packing having an inturned flange at one end, an interior annular groove adjacent to said flange, and one or more external annular projections therefrom, substantially as shown and described.

2. In a device for preventing electrolysis in pipe lines, the combination with adjacent ends of pipes in said line, one of Which is CLINTON S. COURSON.

Witnesses:

F. M HAGAN, -W. M. MONAIR. 

